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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches

Radar Time
Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
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      No description for Alpine has been added yet! Login or register to submit one.
      Activities Click to view
      Region Details
      • 3
      • 6
      • 19
      • 12
      • 4

      Region Status
      Open as of Aug 30, 2021

      Stats

      Avg Trail Rating
      Trails (view details)
      44
      Trails Mountain Bike
      49
      Trails Hike
      36
      Trails Trail Running
      36
      Total Distance
      25 miles
      Total Descent
      8,034 ft
      Total Vertical
      1,788 ft
      Highest Trailhead
      2,826 ft
      Reports
      106
      Photos
      210
      Ridden Counter
      1,702
      Sub Regions

      Photos of Alpine Mountain Bike

      17 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      16 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      11 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      16 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      15 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      12 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      20 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021
      15 |
      Mar 22, 2021 @ 5:34pm
      Mar 22, 2021

      Videos of Alpine Mountain Bike

      Fontana Cal State Series Rd 2. Run 2. Warren Bower
      trail: Run 2
      2:06 | 331 | Jun 7, 2015
      Fontana Cal State Series Rd 2. Run 1. Warren Bower
      trail: Run 1
      2:16 | 178 | Jun 7, 2015
      Noble Canyon 5/3/2015
      trail: Run 2
      5:53 | 147 | May 4, 2015
      FONTANA CITY NATIONAL'S FINAL RUN 3-22-2015
      trail: Run 3
      2:51 | 236 | Mar 23, 2015
      4gs-Ryan Run. 1 Year of Downhilling
      trail: Run 1
      1:49 | 103 | Feb 24, 2015
      Fontana Winter Series #1 Practice Run 1-10-2015
      trail: Run 1
      2:43 | 109 | Jan 27, 2015
      Fontana Winter Series #2 Final Run 1-25-2015
      trail: Run 1
      3:07 | 145 | Jan 27, 2015
      Southridge Winter Series RD#2
      trail: Run 2
      2:38 | 322 | Jan 25, 2015

      Recent Trail Reports

      statustraildateconditionuserinfo
      The Ruins
      Aug 30, 2021 @ 10:05am
      Aug 30, 2021
      DryWyattOJmL1lCleared Some Brush out. Trail is...
      California Riding & Hiking Trail - Japatul
      Apr 27, 2021 @ 9:30pm
      Apr 27, 2021
      DryFaithzaneMaybe only about a mile of this trail was...
      Fast and Loose
      Jan 5, 2021 @ 3:40pm
      Jan 5, 2021
      IdealjessemeyersBack open. Thanks to whoever did the...
      East entrance
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      DryscarshinTrails are running fast.
      Baby head
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      Dryscarshin
      Minefield
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      DryscarshinWatch for water erosion at the bottom.
      Mainline - Minefield diagonal connector
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      Dryscarshin
      Rocky Road
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      Dryscarshinrocky fun climb
      Un-named run
      Jun 8, 2020 @ 6:30pm
      Jun 8, 2020
      Dryscarshin
      Mainline
      Jun 2, 2020 @ 5:31pm
      Jun 2, 2020
      Dryscarshin

      Activity Feed

      usernameactiontypetitledate
      user #2837119WyattOJmL1laddreportRun 1 and 1 more
      Aug 30, 2021 @ 10:03am
      Aug 30, 2021
      user #2837119WyattOJmL1lriddentrailRun 1 and 1 more
      Aug 30, 2021 @ 10:00am
      Aug 30, 2021
      user #2305063SchamFamvotetrailBaby head
      Jul 9, 2021 @ 10:02am
      Jul 9, 2021
      user #2139926johnnykesselwishlisttrailBig Momma DH
      Jun 5, 2021 @ 3:31pm
      Jun 5, 2021
      user #2715119kgutierriddentrailEast entrance and 12 more
      May 22, 2021 @ 1:00pm
      May 22, 2021

      Recent Comments

      usernametypetitlecommentdate
      user #1197023W33bletrailridge to ridgeThese trails are in serious need of some...
      Dec 29, 2017 @ 4:42pm
      Dec 29, 2017
      user #1197023W33bletrailThe RuinsThese trails are in serious need of some...
      Dec 29, 2017 @ 4:42pm
      Dec 29, 2017
      user #757652SoCal-AMtrailOver the ridge loopYeah it's definitely gotten pretty overgrown...
      Mar 20, 2016 @ 6:35pm
      Mar 20, 2016
      user #1089271johnchasetrailOver the ridge loopThis is really a horse trail and is not...
      Mar 20, 2016 @ 2:25pm
      Mar 20, 2016

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike4925 miles8,035 ft17 miles1,788 ft
      #1,560#81421010622,124
      Hike3621 miles5,187 ft13 miles1,788 ft
      #1,251#734104112
      Trail Running3621 miles5,187 ft13 miles1,788 ft
      #1,252#73610469
      • By SoCal-AM & contributors
      • Admins: SDMBA, spokeswoman, Jmlascala71, SDMBA
      • #8892 - 3,204 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Alpine.
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